usr.bin/sockstat/sockstat.c

   1 /*-
   2  * Copyright (c) 2002 Dag-Erling Coïdan Smørgrav
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer
  10  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/param.h>
  33 #include <sys/socket.h>
  34 #include <sys/socketvar.h>
  35 #include <sys/sysctl.h>
  36 #include <sys/file.h>
  37 #include <sys/user.h>
  38
  39 #include <sys/un.h>
  40 #include <sys/unpcb.h>
  41
  42 #include <net/route.h>
  43
  44 #include <netinet/in.h>
  45 #include <netinet/in_pcb.h>
  46 #include <netinet/sctp.h>
  47 #include <netinet/tcp.h>
  48 #define TCPSTATES /* load state names */
  49 #include <netinet/tcp_fsm.h>
  50 #include <netinet/tcp_seq.h>
  51 #include <netinet/tcp_var.h>
  52 #include <arpa/inet.h>
  53
  54 #include <ctype.h>
  55 #include <err.h>
  56 #include <errno.h>
  57 #include <netdb.h>
  58 #include <pwd.h>
  59 #include <stdarg.h>
  60 #include <stdio.h>
  61 #include <stdlib.h>
  62 #include <string.h>
  63 #include <unistd.h>
  64
  65 #define sstosin(ss)     ((struct sockaddr_in *)(ss))
  66 #define sstosin6(ss)    ((struct sockaddr_in6 *)(ss))
  67 #define sstosun(ss)     ((struct sockaddr_un *)(ss))
  68 #define sstosa(ss)      ((struct sockaddr *)(ss))
  69
  70 static int       opt_4;         /* Show IPv4 sockets */
  71 static int       opt_6;         /* Show IPv6 sockets */
  72 static int       opt_c;         /* Show connected sockets */
  73 static int       opt_j;         /* Show specified jail */
  74 static int       opt_L;         /* Don't show IPv4 or IPv6 loopback sockets */
  75 static int       opt_l;         /* Show listening sockets */
  76 static int       opt_S;         /* Show protocol stack if applicable */
  77 static int       opt_s;         /* Show protocol state if applicable */
  78 static int       opt_U;         /* Show remote UDP encapsulation port number */
  79 static int       opt_u;         /* Show Unix domain sockets */
  80 static int       opt_v;         /* Verbose mode */
  81 static int       opt_w;         /* Wide print area for addresses */
  82
  83 /*
  84  * Default protocols to use if no -P was defined.
  85  */
  86 static const char *default_protos[] = {"sctp", "tcp", "udp", "divert" };
  87 static size_t      default_numprotos = nitems(default_protos);
  88
  89 static int      *protos;        /* protocols to use */
  90 static size_t    numprotos;     /* allocated size of protos[] */
  91
  92 static int      *ports;
  93
  94 #define INT_BIT (sizeof(int)*CHAR_BIT)
  95 #define SET_PORT(p) do { ports[p / INT_BIT] |= 1 << (p % INT_BIT); } while (0)
  96 #define CHK_PORT(p) (ports[p / INT_BIT] & (1 << (p % INT_BIT)))
  97
  98 struct addr {
  99         struct sockaddr_storage address;
 100         unsigned int encaps_port;
 101         int state;
 102         struct addr *next;
 103 };
 104
 105 struct sock {
 106         void *socket;
 107         void *pcb;
 108         int shown;
 109         int vflag;
 110         int family;
 111         int proto;
 112         int state;
 113         const char *protoname;
 114         char stack[TCP_FUNCTION_NAME_LEN_MAX];
 115         struct addr *laddr;
 116         struct addr *faddr;
 117         struct sock *next;
 118 };
 119
 120 #define HASHSIZE 1009
 121 static struct sock *sockhash[HASHSIZE];
 122
 123 static struct xfile *xfiles;
 124 static int nxfiles;
 125
 126 static int
 127 xprintf(const char *fmt, ...)
 128 {
 129         va_list ap;
 130         int len;
 131
 132         va_start(ap, fmt);
 133         len = vprintf(fmt, ap);
 134         va_end(ap);
 135         if (len < 0)
 136                 err(1, "printf()");
 137         return (len);
 138 }
 139
 140 static int
 141 get_proto_type(const char *proto)
 142 {
 143         struct protoent *pent;
 144
 145         if (strlen(proto) == 0)
 146                 return (0);
 147         pent = getprotobyname(proto);
 148         if (pent == NULL) {
 149                 warn("getprotobyname");
 150                 return (-1);
 151         }
 152         return (pent->p_proto);
 153 }
 154
 155 static void
 156 init_protos(int num)
 157 {
 158         int proto_count = 0;
 159
 160         if (num > 0) {
 161                 proto_count = num;
 162         } else {
 163                 /* Find the maximum number of possible protocols. */
 164                 while (getprotoent() != NULL)
 165                         proto_count++;
 166                 endprotoent();
 167         }
 168
 169         if ((protos = malloc(sizeof(int) * proto_count)) == NULL)
 170                 err(1, "malloc");
 171         numprotos = proto_count;
 172 }
 173
 174 static int
 175 parse_protos(char *protospec)
 176 {
 177         char *prot;
 178         int proto_type, proto_index;
 179
 180         if (protospec == NULL)
 181                 return (-1);
 182
 183         init_protos(0);
 184         proto_index = 0;
 185         while ((prot = strsep(&protospec, ",")) != NULL) {
 186                 if (strlen(prot) == 0)
 187                         continue;
 188                 proto_type = get_proto_type(prot);
 189                 if (proto_type != -1)
 190                         protos[proto_index++] = proto_type;
 191         }
 192         numprotos = proto_index;
 193         return (proto_index);
 194 }
 195
 196 static void
 197 parse_ports(const char *portspec)
 198 {
 199         const char *p, *q;
 200         int port, end;
 201
 202         if (ports == NULL)
 203                 if ((ports = calloc(65536 / INT_BIT, sizeof(int))) == NULL)
 204                         err(1, "calloc()");
 205         p = portspec;
 206         while (*p != '\0') {
 207                 if (!isdigit(*p))
 208                         errx(1, "syntax error in port range");
 209                 for (q = p; *q != '\0' && isdigit(*q); ++q)
 210                         /* nothing */ ;
 211                 for (port = 0; p < q; ++p)
 212                         port = port * 10 + digittoint(*p);
 213                 if (port < 0 || port > 65535)
 214                         errx(1, "invalid port number");
 215                 SET_PORT(port);
 216                 switch (*p) {
 217                 case '-':
 218                         ++p;
 219                         break;
 220                 case ',':
 221                         ++p;
 222                         /* fall through */
 223                 case '\0':
 224                 default:
 225                         continue;
 226                 }
 227                 for (q = p; *q != '\0' && isdigit(*q); ++q)
 228                         /* nothing */ ;
 229                 for (end = 0; p < q; ++p)
 230                         end = end * 10 + digittoint(*p);
 231                 if (end < port || end > 65535)
 232                         errx(1, "invalid port number");
 233                 while (port++ < end)
 234                         SET_PORT(port);
 235                 if (*p == ',')
 236                         ++p;
 237         }
 238 }
 239
 240 static void
 241 sockaddr(struct sockaddr_storage *ss, int af, void *addr, int port)
 242 {
 243         struct sockaddr_in *sin4;
 244         struct sockaddr_in6 *sin6;
 245
 246         bzero(ss, sizeof(*ss));
 247         switch (af) {
 248         case AF_INET:
 249                 sin4 = sstosin(ss);
 250                 sin4->sin_len = sizeof(*sin4);
 251                 sin4->sin_family = af;
 252                 sin4->sin_port = port;
 253                 sin4->sin_addr = *(struct in_addr *)addr;
 254                 break;
 255         case AF_INET6:
 256                 sin6 = sstosin6(ss);
 257                 sin6->sin6_len = sizeof(*sin6);
 258                 sin6->sin6_family = af;
 259                 sin6->sin6_port = port;
 260                 sin6->sin6_addr = *(struct in6_addr *)addr;
 261 #define s6_addr16       __u6_addr.__u6_addr16
 262                 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
 263                         sin6->sin6_scope_id =
 264                             ntohs(sin6->sin6_addr.s6_addr16[1]);
 265                         sin6->sin6_addr.s6_addr16[1] = 0;
 266                 }
 267                 break;
 268         default:
 269                 abort();
 270         }
 271 }
 272
 273 static void
 274 free_socket(struct sock *sock)
 275 {
 276         struct addr *cur, *next;
 277
 278         cur = sock->laddr;
 279         while (cur != NULL) {
 280                 next = cur->next;
 281                 free(cur);
 282                 cur = next;
 283         }
 284         cur = sock->faddr;
 285         while (cur != NULL) {
 286                 next = cur->next;
 287                 free(cur);
 288                 cur = next;
 289         }
 290         free(sock);
 291 }
 292
 293 static void
 294 gather_sctp(void)
 295 {
 296         struct sock *sock;
 297         struct addr *laddr, *prev_laddr, *faddr, *prev_faddr;
 298         struct xsctp_inpcb *xinpcb;
 299         struct xsctp_tcb *xstcb;
 300         struct xsctp_raddr *xraddr;
 301         struct xsctp_laddr *xladdr;
 302         const char *varname;
 303         size_t len, offset;
 304         char *buf;
 305         int hash, vflag;
 306         int no_stcb, local_all_loopback, foreign_all_loopback;
 307
 308         vflag = 0;
 309         if (opt_4)
 310                 vflag |= INP_IPV4;
 311         if (opt_6)
 312                 vflag |= INP_IPV6;
 313
 314         varname = "net.inet.sctp.assoclist";
 315         if (sysctlbyname(varname, 0, &len, 0, 0) < 0) {
 316                 if (errno != ENOENT)
 317                         err(1, "sysctlbyname()");
 318                 return;
 319         }
 320         if ((buf = (char *)malloc(len)) == NULL) {
 321                 err(1, "malloc()");
 322                 return;
 323         }
 324         if (sysctlbyname(varname, buf, &len, 0, 0) < 0) {
 325                 err(1, "sysctlbyname()");
 326                 free(buf);
 327                 return;
 328         }
 329         xinpcb = (struct xsctp_inpcb *)(void *)buf;
 330         offset = sizeof(struct xsctp_inpcb);
 331         while ((offset < len) && (xinpcb->last == 0)) {
 332                 if ((sock = calloc(1, sizeof *sock)) == NULL)
 333                         err(1, "malloc()");
 334                 sock->socket = xinpcb->socket;
 335                 sock->proto = IPPROTO_SCTP;
 336                 sock->protoname = "sctp";
 337                 if (xinpcb->maxqlen == 0)
 338                         sock->state = SCTP_CLOSED;
 339                 else
 340                         sock->state = SCTP_LISTEN;
 341                 if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
 342                         sock->family = AF_INET6;
 343                         /*
 344                          * Currently there is no way to distinguish between
 345                          * IPv6 only sockets or dual family sockets.
 346                          * So mark it as dual socket.
 347                          */
 348                         sock->vflag = INP_IPV6 | INP_IPV4;
 349                 } else {
 350                         sock->family = AF_INET;
 351                         sock->vflag = INP_IPV4;
 352                 }
 353                 prev_laddr = NULL;
 354                 local_all_loopback = 1;
 355                 while (offset < len) {
 356                         xladdr = (struct xsctp_laddr *)(void *)(buf + offset);
 357                         offset += sizeof(struct xsctp_laddr);
 358                         if (xladdr->last == 1)
 359                                 break;
 360                         if ((laddr = calloc(1, sizeof(struct addr))) == NULL)
 361                                 err(1, "malloc()");
 362                         switch (xladdr->address.sa.sa_family) {
 363                         case AF_INET:
 364 #define __IN_IS_ADDR_LOOPBACK(pina) \
 365         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 366                                 if (!__IN_IS_ADDR_LOOPBACK(
 367                                     &xladdr->address.sin.sin_addr))
 368                                         local_all_loopback = 0;
 369 #undef  __IN_IS_ADDR_LOOPBACK
 370                                 sockaddr(&laddr->address, AF_INET,
 371                                     &xladdr->address.sin.sin_addr,
 372                                     htons(xinpcb->local_port));
 373                                 break;
 374                         case AF_INET6:
 375                                 if (!IN6_IS_ADDR_LOOPBACK(
 376                                     &xladdr->address.sin6.sin6_addr))
 377                                         local_all_loopback = 0;
 378                                 sockaddr(&laddr->address, AF_INET6,
 379                                     &xladdr->address.sin6.sin6_addr,
 380                                     htons(xinpcb->local_port));
 381                                 break;
 382                         default:
 383                                 errx(1, "address family %d not supported",
 384                                     xladdr->address.sa.sa_family);
 385                         }
 386                         laddr->next = NULL;
 387                         if (prev_laddr == NULL)
 388                                 sock->laddr = laddr;
 389                         else
 390                                 prev_laddr->next = laddr;
 391                         prev_laddr = laddr;
 392                 }
 393                 if (sock->laddr == NULL) {
 394                         if ((sock->laddr =
 395                             calloc(1, sizeof(struct addr))) == NULL)
 396                                 err(1, "malloc()");
 397                         sock->laddr->address.ss_family = sock->family;
 398                         if (sock->family == AF_INET)
 399                                 sock->laddr->address.ss_len =
 400                                     sizeof(struct sockaddr_in);
 401                         else
 402                                 sock->laddr->address.ss_len =
 403                                     sizeof(struct sockaddr_in6);
 404                         local_all_loopback = 0;
 405                 }
 406                 if ((sock->faddr = calloc(1, sizeof(struct addr))) == NULL)
 407                         err(1, "malloc()");
 408                 sock->faddr->address.ss_family = sock->family;
 409                 if (sock->family == AF_INET)
 410                         sock->faddr->address.ss_len =
 411                             sizeof(struct sockaddr_in);
 412                 else
 413                         sock->faddr->address.ss_len =
 414                             sizeof(struct sockaddr_in6);
 415                 no_stcb = 1;
 416                 while (offset < len) {
 417                         xstcb = (struct xsctp_tcb *)(void *)(buf + offset);
 418                         offset += sizeof(struct xsctp_tcb);
 419                         if (no_stcb) {
 420                                 if (opt_l && (sock->vflag & vflag) &&
 421                                     (!opt_L || !local_all_loopback) &&
 422                                     ((xinpcb->flags & SCTP_PCB_FLAGS_UDPTYPE) ||
 423                                      (xstcb->last == 1))) {
 424                                         hash = (int)((uintptr_t)sock->socket %
 425                                             HASHSIZE);
 426                                         sock->next = sockhash[hash];
 427                                         sockhash[hash] = sock;
 428                                 } else {
 429                                         free_socket(sock);
 430                                 }
 431                         }
 432                         if (xstcb->last == 1)
 433                                 break;
 434                         no_stcb = 0;
 435                         if (opt_c) {
 436                                 if ((sock = calloc(1, sizeof *sock)) == NULL)
 437                                         err(1, "malloc()");
 438                                 sock->socket = xinpcb->socket;
 439                                 sock->proto = IPPROTO_SCTP;
 440                                 sock->protoname = "sctp";
 441                                 sock->state = (int)xstcb->state;
 442                                 if (xinpcb->flags & SCTP_PCB_FLAGS_BOUND_V6) {
 443                                         sock->family = AF_INET6;
 444                                 /*
 445                                  * Currently there is no way to distinguish
 446                                  * between IPv6 only sockets or dual family
 447                                  *  sockets. So mark it as dual socket.
 448                                  */
 449                                         sock->vflag = INP_IPV6 | INP_IPV4;
 450                                 } else {
 451                                         sock->family = AF_INET;
 452                                         sock->vflag = INP_IPV4;
 453                                 }
 454                         }
 455                         prev_laddr = NULL;
 456                         local_all_loopback = 1;
 457                         while (offset < len) {
 458                                 xladdr = (struct xsctp_laddr *)(void *)(buf +
 459                                     offset);
 460                                 offset += sizeof(struct xsctp_laddr);
 461                                 if (xladdr->last == 1)
 462                                         break;
 463                                 if (!opt_c)
 464                                         continue;
 465                                 laddr = calloc(1, sizeof(struct addr));
 466                                 if (laddr == NULL)
 467                                         err(1, "malloc()");
 468                                 switch (xladdr->address.sa.sa_family) {
 469                                 case AF_INET:
 470 #define __IN_IS_ADDR_LOOPBACK(pina) \
 471         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 472                                         if (!__IN_IS_ADDR_LOOPBACK(
 473                                             &xladdr->address.sin.sin_addr))
 474                                                 local_all_loopback = 0;
 475 #undef  __IN_IS_ADDR_LOOPBACK
 476                                         sockaddr(&laddr->address, AF_INET,
 477                                             &xladdr->address.sin.sin_addr,
 478                                             htons(xstcb->local_port));
 479                                         break;
 480                                 case AF_INET6:
 481                                         if (!IN6_IS_ADDR_LOOPBACK(
 482                                             &xladdr->address.sin6.sin6_addr))
 483                                                 local_all_loopback = 0;
 484                                         sockaddr(&laddr->address, AF_INET6,
 485                                             &xladdr->address.sin6.sin6_addr,
 486                                             htons(xstcb->local_port));
 487                                         break;
 488                                 default:
 489                                         errx(1,
 490                                             "address family %d not supported",
 491                                             xladdr->address.sa.sa_family);
 492                                 }
 493                                 laddr->next = NULL;
 494                                 if (prev_laddr == NULL)
 495                                         sock->laddr = laddr;
 496                                 else
 497                                         prev_laddr->next = laddr;
 498                                 prev_laddr = laddr;
 499                         }
 500                         prev_faddr = NULL;
 501                         foreign_all_loopback = 1;
 502                         while (offset < len) {
 503                                 xraddr = (struct xsctp_raddr *)(void *)(buf +
 504                                     offset);
 505                                 offset += sizeof(struct xsctp_raddr);
 506                                 if (xraddr->last == 1)
 507                                         break;
 508                                 if (!opt_c)
 509                                         continue;
 510                                 faddr = calloc(1, sizeof(struct addr));
 511                                 if (faddr == NULL)
 512                                         err(1, "malloc()");
 513                                 switch (xraddr->address.sa.sa_family) {
 514                                 case AF_INET:
 515 #define __IN_IS_ADDR_LOOPBACK(pina) \
 516         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 517                                         if (!__IN_IS_ADDR_LOOPBACK(
 518                                             &xraddr->address.sin.sin_addr))
 519                                                 foreign_all_loopback = 0;
 520 #undef  __IN_IS_ADDR_LOOPBACK
 521                                         sockaddr(&faddr->address, AF_INET,
 522                                             &xraddr->address.sin.sin_addr,
 523                                             htons(xstcb->remote_port));
 524                                         break;
 525                                 case AF_INET6:
 526                                         if (!IN6_IS_ADDR_LOOPBACK(
 527                                             &xraddr->address.sin6.sin6_addr))
 528                                                 foreign_all_loopback = 0;
 529                                         sockaddr(&faddr->address, AF_INET6,
 530                                             &xraddr->address.sin6.sin6_addr,
 531                                             htons(xstcb->remote_port));
 532                                         break;
 533                                 default:
 534                                         errx(1,
 535                                             "address family %d not supported",
 536                                             xraddr->address.sa.sa_family);
 537                                 }
 538                                 faddr->encaps_port = xraddr->encaps_port;
 539                                 faddr->state = xraddr->state;
 540                                 faddr->next = NULL;
 541                                 if (prev_faddr == NULL)
 542                                         sock->faddr = faddr;
 543                                 else
 544                                         prev_faddr->next = faddr;
 545                                 prev_faddr = faddr;
 546                         }
 547                         if (opt_c) {
 548                                 if ((sock->vflag & vflag) &&
 549                                     (!opt_L ||
 550                                      !(local_all_loopback ||
 551                                      foreign_all_loopback))) {
 552                                         hash = (int)((uintptr_t)sock->socket %
 553                                             HASHSIZE);
 554                                         sock->next = sockhash[hash];
 555                                         sockhash[hash] = sock;
 556                                 } else {
 557                                         free_socket(sock);
 558                                 }
 559                         }
 560                 }
 561                 xinpcb = (struct xsctp_inpcb *)(void *)(buf + offset);
 562                 offset += sizeof(struct xsctp_inpcb);
 563         }
 564         free(buf);
 565 }
 566
 567 static void
 568 gather_inet(int proto)
 569 {
 570         struct xinpgen *xig, *exig;
 571         struct xinpcb *xip;
 572         struct xtcpcb *xtp = NULL;
 573         struct xsocket *so;
 574         struct sock *sock;
 575         struct addr *laddr, *faddr;
 576         const char *varname, *protoname;
 577         size_t len, bufsize;
 578         void *buf;
 579         int hash, retry, vflag;
 580
 581         vflag = 0;
 582         if (opt_4)
 583                 vflag |= INP_IPV4;
 584         if (opt_6)
 585                 vflag |= INP_IPV6;
 586
 587         switch (proto) {
 588         case IPPROTO_TCP:
 589                 varname = "net.inet.tcp.pcblist";
 590                 protoname = "tcp";
 591                 break;
 592         case IPPROTO_UDP:
 593                 varname = "net.inet.udp.pcblist";
 594                 protoname = "udp";
 595                 break;
 596         case IPPROTO_DIVERT:
 597                 varname = "net.inet.divert.pcblist";
 598                 protoname = "div";
 599                 break;
 600         default:
 601                 errx(1, "protocol %d not supported", proto);
 602         }
 603
 604         buf = NULL;
 605         bufsize = 8192;
 606         retry = 5;
 607         do {
 608                 for (;;) {
 609                         if ((buf = realloc(buf, bufsize)) == NULL)
 610                                 err(1, "realloc()");
 611                         len = bufsize;
 612                         if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
 613                                 break;
 614                         if (errno == ENOENT)
 615                                 goto out;
 616                         if (errno != ENOMEM || len != bufsize)
 617                                 err(1, "sysctlbyname()");
 618                         bufsize *= 2;
 619                 }
 620                 xig = (struct xinpgen *)buf;
 621                 exig = (struct xinpgen *)(void *)
 622                     ((char *)buf + len - sizeof *exig);
 623                 if (xig->xig_len != sizeof *xig ||
 624                     exig->xig_len != sizeof *exig)
 625                         errx(1, "struct xinpgen size mismatch");
 626         } while (xig->xig_gen != exig->xig_gen && retry--);
 627
 628         if (xig->xig_gen != exig->xig_gen && opt_v)
 629                 warnx("warning: data may be inconsistent");
 630
 631         for (;;) {
 632                 xig = (struct xinpgen *)(void *)((char *)xig + xig->xig_len);
 633                 if (xig >= exig)
 634                         break;
 635                 switch (proto) {
 636                 case IPPROTO_TCP:
 637                         xtp = (struct xtcpcb *)xig;
 638                         xip = &xtp->xt_inp;
 639                         if (xtp->xt_len != sizeof(*xtp)) {
 640                                 warnx("struct xtcpcb size mismatch");
 641                                 goto out;
 642                         }
 643                         protoname = xtp->t_flags & TF_TOE ? "toe" : "tcp";
 644                         break;
 645                 case IPPROTO_UDP:
 646                 case IPPROTO_DIVERT:
 647                         xip = (struct xinpcb *)xig;
 648                         if (xip->xi_len != sizeof(*xip)) {
 649                                 warnx("struct xinpcb size mismatch");
 650                                 goto out;
 651                         }
 652                         break;
 653                 default:
 654                         errx(1, "protocol %d not supported", proto);
 655                 }
 656                 so = &xip->xi_socket;
 657                 if ((xip->inp_vflag & vflag) == 0)
 658                         continue;
 659                 if (xip->inp_vflag & INP_IPV4) {
 660                         if ((xip->inp_fport == 0 && !opt_l) ||
 661                             (xip->inp_fport != 0 && !opt_c))
 662                                 continue;
 663 #define __IN_IS_ADDR_LOOPBACK(pina) \
 664         ((ntohl((pina)->s_addr) >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET)
 665                         if (opt_L &&
 666                             (__IN_IS_ADDR_LOOPBACK(&xip->inp_faddr) ||
 667                              __IN_IS_ADDR_LOOPBACK(&xip->inp_laddr)))
 668                                 continue;
 669 #undef  __IN_IS_ADDR_LOOPBACK
 670                 } else if (xip->inp_vflag & INP_IPV6) {
 671                         if ((xip->inp_fport == 0 && !opt_l) ||
 672                             (xip->inp_fport != 0 && !opt_c))
 673                                 continue;
 674                         if (opt_L &&
 675                             (IN6_IS_ADDR_LOOPBACK(&xip->in6p_faddr) ||
 676                              IN6_IS_ADDR_LOOPBACK(&xip->in6p_laddr)))
 677                                 continue;
 678                 } else {
 679                         if (opt_v)
 680                                 warnx("invalid vflag 0x%x", xip->inp_vflag);
 681                         continue;
 682                 }
 683                 if ((sock = calloc(1, sizeof(*sock))) == NULL)
 684                         err(1, "malloc()");
 685                 if ((laddr = calloc(1, sizeof *laddr)) == NULL)
 686                         err(1, "malloc()");
 687                 if ((faddr = calloc(1, sizeof *faddr)) == NULL)
 688                         err(1, "malloc()");
 689                 sock->socket = so->xso_so;
 690                 sock->proto = proto;
 691                 if (xip->inp_vflag & INP_IPV4) {
 692                         sock->family = AF_INET;
 693                         sockaddr(&laddr->address, sock->family,
 694                             &xip->inp_laddr, xip->inp_lport);
 695                         sockaddr(&faddr->address, sock->family,
 696                             &xip->inp_faddr, xip->inp_fport);
 697                 } else if (xip->inp_vflag & INP_IPV6) {
 698                         sock->family = AF_INET6;
 699                         sockaddr(&laddr->address, sock->family,
 700                             &xip->in6p_laddr, xip->inp_lport);
 701                         sockaddr(&faddr->address, sock->family,
 702                             &xip->in6p_faddr, xip->inp_fport);
 703                 }
 704                 laddr->next = NULL;
 705                 faddr->next = NULL;
 706                 sock->laddr = laddr;
 707                 sock->faddr = faddr;
 708                 sock->vflag = xip->inp_vflag;
 709                 if (proto == IPPROTO_TCP) {
 710                         sock->state = xtp->t_state;
 711                         memcpy(sock->stack, xtp->xt_stack,
 712                             TCP_FUNCTION_NAME_LEN_MAX);
 713                 }
 714                 sock->protoname = protoname;
 715                 hash = (int)((uintptr_t)sock->socket % HASHSIZE);
 716                 sock->next = sockhash[hash];
 717                 sockhash[hash] = sock;
 718         }
 719 out:
 720         free(buf);
 721 }
 722
 723 static void
 724 gather_unix(int proto)
 725 {
 726         struct xunpgen *xug, *exug;
 727         struct xunpcb *xup;
 728         struct sock *sock;
 729         struct addr *laddr, *faddr;
 730         const char *varname, *protoname;
 731         size_t len, bufsize;
 732         void *buf;
 733         int hash, retry;
 734
 735         switch (proto) {
 736         case SOCK_STREAM:
 737                 varname = "net.local.stream.pcblist";
 738                 protoname = "stream";
 739                 break;
 740         case SOCK_DGRAM:
 741                 varname = "net.local.dgram.pcblist";
 742                 protoname = "dgram";
 743                 break;
 744         case SOCK_SEQPACKET:
 745                 varname = "net.local.seqpacket.pcblist";
 746                 protoname = "seqpac";
 747                 break;
 748         default:
 749                 abort();
 750         }
 751         buf = NULL;
 752         bufsize = 8192;
 753         retry = 5;
 754         do {
 755                 for (;;) {
 756                         if ((buf = realloc(buf, bufsize)) == NULL)
 757                                 err(1, "realloc()");
 758                         len = bufsize;
 759                         if (sysctlbyname(varname, buf, &len, NULL, 0) == 0)
 760                                 break;
 761                         if (errno != ENOMEM || len != bufsize)
 762                                 err(1, "sysctlbyname()");
 763                         bufsize *= 2;
 764                 }
 765                 xug = (struct xunpgen *)buf;
 766                 exug = (struct xunpgen *)(void *)
 767                     ((char *)buf + len - sizeof(*exug));
 768                 if (xug->xug_len != sizeof(*xug) ||
 769                     exug->xug_len != sizeof(*exug)) {
 770                         warnx("struct xinpgen size mismatch");
 771                         goto out;
 772                 }
 773         } while (xug->xug_gen != exug->xug_gen && retry--);
 774
 775         if (xug->xug_gen != exug->xug_gen && opt_v)
 776                 warnx("warning: data may be inconsistent");
 777
 778         for (;;) {
 779                 xug = (struct xunpgen *)(void *)((char *)xug + xug->xug_len);
 780                 if (xug >= exug)
 781                         break;
 782                 xup = (struct xunpcb *)xug;
 783                 if (xup->xu_len != sizeof(*xup)) {
 784                         warnx("struct xunpcb size mismatch");
 785                         goto out;
 786                 }
 787                 if ((xup->xu_unp.unp_conn == NULL && !opt_l) ||
 788                     (xup->xu_unp.unp_conn != NULL && !opt_c))
 789                         continue;
 790                 if ((sock = calloc(1, sizeof(*sock))) == NULL)
 791                         err(1, "malloc()");
 792                 if ((laddr = calloc(1, sizeof *laddr)) == NULL)
 793                         err(1, "malloc()");
 794                 if ((faddr = calloc(1, sizeof *faddr)) == NULL)
 795                         err(1, "malloc()");
 796                 sock->socket = xup->xu_socket.xso_so;
 797                 sock->pcb = xup->xu_unpp;
 798                 sock->proto = proto;
 799                 sock->family = AF_UNIX;
 800                 sock->protoname = protoname;
 801                 if (xup->xu_unp.unp_addr != NULL)
 802                         laddr->address =
 803                             *(struct sockaddr_storage *)(void *)&xup->xu_addr;
 804                 else if (xup->xu_unp.unp_conn != NULL)
 805                         *(void **)&(faddr->address) = xup->xu_unp.unp_conn;
 806                 laddr->next = NULL;
 807                 faddr->next = NULL;
 808                 sock->laddr = laddr;
 809                 sock->faddr = faddr;
 810                 hash = (int)((uintptr_t)sock->socket % HASHSIZE);
 811                 sock->next = sockhash[hash];
 812                 sockhash[hash] = sock;
 813         }
 814 out:
 815         free(buf);
 816 }
 817
 818 static void
 819 getfiles(void)
 820 {
 821         size_t len, olen;
 822
 823         olen = len = sizeof(*xfiles);
 824         if ((xfiles = malloc(len)) == NULL)
 825                 err(1, "malloc()");
 826         while (sysctlbyname("kern.file", xfiles, &len, 0, 0) == -1) {
 827                 if (errno != ENOMEM || len != olen)
 828                         err(1, "sysctlbyname()");
 829                 olen = len *= 2;
 830                 if ((xfiles = realloc(xfiles, len)) == NULL)
 831                         err(1, "realloc()");
 832         }
 833         if (len > 0 && xfiles->xf_size != sizeof(*xfiles))
 834                 errx(1, "struct xfile size mismatch");
 835         nxfiles = len / sizeof(*xfiles);
 836 }
 837
 838 static int
 839 printaddr(struct sockaddr_storage *ss)
 840 {
 841         struct sockaddr_un *sun;
 842         char addrstr[NI_MAXHOST] = { '\0', '\0' };
 843         int error, off, port = 0;
 844
 845         switch (ss->ss_family) {
 846         case AF_INET:
 847                 if (inet_lnaof(sstosin(ss)->sin_addr) == INADDR_ANY)
 848                         addrstr[0] = '*';
 849                 port = ntohs(sstosin(ss)->sin_port);
 850                 break;
 851         case AF_INET6:
 852                 if (IN6_IS_ADDR_UNSPECIFIED(&sstosin6(ss)->sin6_addr))
 853                         addrstr[0] = '*';
 854                 port = ntohs(sstosin6(ss)->sin6_port);
 855                 break;
 856         case AF_UNIX:
 857                 sun = sstosun(ss);
 858                 off = (int)((char *)&sun->sun_path - (char *)sun);
 859                 return (xprintf("%.*s", sun->sun_len - off, sun->sun_path));
 860         }
 861         if (addrstr[0] == '\0') {
 862                 error = getnameinfo(sstosa(ss), ss->ss_len, addrstr,
 863                     sizeof(addrstr), NULL, 0, NI_NUMERICHOST);
 864                 if (error)
 865                         errx(1, "getnameinfo()");
 866         }
 867         if (port == 0)
 868                 return xprintf("%s:*", addrstr);
 869         else
 870                 return xprintf("%s:%d", addrstr, port);
 871 }
 872
 873 static const char *
 874 getprocname(pid_t pid)
 875 {
 876         static struct kinfo_proc proc;
 877         size_t len;
 878         int mib[4];
 879
 880         mib[0] = CTL_KERN;
 881         mib[1] = KERN_PROC;
 882         mib[2] = KERN_PROC_PID;
 883         mib[3] = (int)pid;
 884         len = sizeof(proc);
 885         if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
 886                 /* Do not warn if the process exits before we get its name. */
 887                 if (errno != ESRCH)
 888                         warn("sysctl()");
 889                 return ("??");
 890         }
 891         return (proc.ki_comm);
 892 }
 893
 894 static int
 895 getprocjid(pid_t pid)
 896 {
 897         static struct kinfo_proc proc;
 898         size_t len;
 899         int mib[4];
 900
 901         mib[0] = CTL_KERN;
 902         mib[1] = KERN_PROC;
 903         mib[2] = KERN_PROC_PID;
 904         mib[3] = (int)pid;
 905         len = sizeof(proc);
 906         if (sysctl(mib, nitems(mib), &proc, &len, NULL, 0) == -1) {
 907                 /* Do not warn if the process exits before we get its jid. */
 908                 if (errno != ESRCH)
 909                         warn("sysctl()");
 910                 return (-1);
 911         }
 912         return (proc.ki_jid);
 913 }
 914
 915 static int
 916 check_ports(struct sock *s)
 917 {
 918         int port;
 919         struct addr *addr;
 920
 921         if (ports == NULL)
 922                 return (1);
 923         if ((s->family != AF_INET) && (s->family != AF_INET6))
 924                 return (1);
 925         for (addr = s->laddr; addr != NULL; addr = addr->next) {
 926                 if (s->family == AF_INET)
 927                         port = ntohs(sstosin(&addr->address)->sin_port);
 928                 else
 929                         port = ntohs(sstosin6(&addr->address)->sin6_port);
 930                 if (CHK_PORT(port))
 931                         return (1);
 932         }
 933         for (addr = s->faddr; addr != NULL; addr = addr->next) {
 934                 if (s->family == AF_INET)
 935                         port = ntohs(sstosin(&addr->address)->sin_port);
 936                 else
 937                         port = ntohs(sstosin6(&addr->address)->sin6_port);
 938                 if (CHK_PORT(port))
 939                         return (1);
 940         }
 941         return (0);
 942 }
 943
 944 static const char *
 945 sctp_conn_state(int state)
 946 {
 947         switch (state) {
 948         case SCTP_CLOSED:
 949                 return "CLOSED";
 950                 break;
 951         case SCTP_BOUND:
 952                 return "BOUND";
 953                 break;
 954         case SCTP_LISTEN:
 955                 return "LISTEN";
 956                 break;
 957         case SCTP_COOKIE_WAIT:
 958                 return "COOKIE_WAIT";
 959                 break;
 960         case SCTP_COOKIE_ECHOED:
 961                 return "COOKIE_ECHOED";
 962                 break;
 963         case SCTP_ESTABLISHED:
 964                 return "ESTABLISHED";
 965                 break;
 966         case SCTP_SHUTDOWN_SENT:
 967                 return "SHUTDOWN_SENT";
 968                 break;
 969         case SCTP_SHUTDOWN_RECEIVED:
 970                 return "SHUTDOWN_RECEIVED";
 971                 break;
 972         case SCTP_SHUTDOWN_ACK_SENT:
 973                 return "SHUTDOWN_ACK_SENT";
 974                 break;
 975         case SCTP_SHUTDOWN_PENDING:
 976                 return "SHUTDOWN_PENDING";
 977                 break;
 978         default:
 979                 return "UNKNOWN";
 980                 break;
 981         }
 982 }
 983
 984 static const char *
 985 sctp_path_state(int state)
 986 {
 987         switch (state) {
 988         case SCTP_UNCONFIRMED:
 989                 return "UNCONFIRMED";
 990                 break;
 991         case SCTP_ACTIVE:
 992                 return "ACTIVE";
 993                 break;
 994         case SCTP_INACTIVE:
 995                 return "INACTIVE";
 996                 break;
 997         default:
 998                 return "UNKNOWN";
 999                 break;
1000         }
1001 }
1002
1003 static void
1004 displaysock(struct sock *s, int pos)
1005 {
1006         void *p;
1007         int hash, first, offset;
1008         struct addr *laddr, *faddr;
1009         struct sock *s_tmp;
1010
1011         while (pos < 29)
1012                 pos += xprintf(" ");
1013         pos += xprintf("%s", s->protoname);
1014         if (s->vflag & INP_IPV4)
1015                 pos += xprintf("4");
1016         if (s->vflag & INP_IPV6)
1017                 pos += xprintf("6");
1018         if (s->vflag & (INP_IPV4 | INP_IPV6))
1019                 pos += xprintf(" ");
1020         laddr = s->laddr;
1021         faddr = s->faddr;
1022         first = 1;
1023         while (laddr != NULL || faddr != NULL) {
1024                 offset = 36;
1025                 while (pos < offset)
1026                         pos += xprintf(" ");
1027                 switch (s->family) {
1028                 case AF_INET:
1029                 case AF_INET6:
1030                         if (laddr != NULL) {
1031                                 pos += printaddr(&laddr->address);
1032                                 if (s->family == AF_INET6 && pos >= 58)
1033                                         pos += xprintf(" ");
1034                         }
1035                         offset += opt_w ? 46 : 22;
1036                         while (pos < offset)
1037                                 pos += xprintf(" ");
1038                         if (faddr != NULL)
1039                                 pos += printaddr(&faddr->address);
1040                         offset += opt_w ? 46 : 22;
1041                         break;
1042                 case AF_UNIX:
1043                         if ((laddr == NULL) || (faddr == NULL))
1044                                 errx(1, "laddr = %p or faddr = %p is NULL",
1045                                     (void *)laddr, (void *)faddr);
1046                         /* server */
1047                         if (laddr->address.ss_len > 0) {
1048                                 pos += printaddr(&laddr->address);
1049                                 break;
1050                         }
1051                         /* client */
1052                         p = *(void **)&(faddr->address);
1053                         if (p == NULL) {
1054                                 pos += xprintf("(not connected)");
1055                                 offset += opt_w ? 92 : 44;
1056                                 break;
1057                         }
1058                         pos += xprintf("-> ");
1059                         for (hash = 0; hash < HASHSIZE; ++hash) {
1060                                 for (s_tmp = sockhash[hash];
1061                                     s_tmp != NULL;
1062                                     s_tmp = s_tmp->next)
1063                                         if (s_tmp->pcb == p)
1064                                                 break;
1065                                 if (s_tmp != NULL)
1066                                         break;
1067                         }
1068                         if (s_tmp == NULL || s_tmp->laddr == NULL ||
1069                             s_tmp->laddr->address.ss_len == 0)
1070                                 pos += xprintf("??");
1071                         else
1072                                 pos += printaddr(&s_tmp->laddr->address);
1073                         offset += opt_w ? 92 : 44;
1074                         break;
1075                 default:
1076                         abort();
1077                 }
1078                 if (opt_U) {
1079                         if (faddr != NULL &&
1080                             s->proto == IPPROTO_SCTP &&
1081                             s->state != SCTP_CLOSED &&
1082                             s->state != SCTP_BOUND &&
1083                             s->state != SCTP_LISTEN) {
1084                                 while (pos < offset)
1085                                         pos += xprintf(" ");
1086                                 pos += xprintf("%u",
1087                                     ntohs(faddr->encaps_port));
1088                         }
1089                         offset += 7;
1090                 }
1091                 if (opt_s) {
1092                         if (faddr != NULL &&
1093                             s->proto == IPPROTO_SCTP &&
1094                             s->state != SCTP_CLOSED &&
1095                             s->state != SCTP_BOUND &&
1096                             s->state != SCTP_LISTEN) {
1097                                 while (pos < offset)
1098                                         pos += xprintf(" ");
1099                                 pos += xprintf("%s",
1100                                     sctp_path_state(faddr->state));
1101                         }
1102                         offset += 13;
1103                 }
1104                 if (first) {
1105                         if (opt_s) {
1106                                 if (s->proto == IPPROTO_SCTP ||
1107                                     s->proto == IPPROTO_TCP) {
1108                                         while (pos < offset)
1109                                                 pos += xprintf(" ");
1110                                         switch (s->proto) {
1111                                         case IPPROTO_SCTP:
1112                                                 pos += xprintf("%s",
1113                                                     sctp_conn_state(s->state));
1114                                                 break;
1115                                         case IPPROTO_TCP:
1116                                                 if (s->state >= 0 &&
1117                                                     s->state < TCP_NSTATES)
1118                                                         pos += xprintf("%s",
1119                                                             tcpstates[s->state]);
1120                                                 else
1121                                                         pos += xprintf("?");
1122                                                 break;
1123                                         }
1124                                 }
1125                                 offset += 13;
1126                         }
1127                         if (opt_S && s->proto == IPPROTO_TCP) {
1128                                 while (pos < offset)
1129                                         pos += xprintf(" ");
1130                                 xprintf("%.*s", TCP_FUNCTION_NAME_LEN_MAX,
1131                                     s->stack);
1132                         }
1133                 }
1134                 if (laddr != NULL)
1135                         laddr = laddr->next;
1136                 if (faddr != NULL)
1137                         faddr = faddr->next;
1138                 if ((laddr != NULL) || (faddr != NULL)) {
1139                         xprintf("\n");
1140                         pos = 0;
1141                 }
1142                 first = 0;
1143         }
1144         xprintf("\n");
1145 }
1146
1147 static void
1148 display(void)
1149 {
1150         struct passwd *pwd;
1151         struct xfile *xf;
1152         struct sock *s;
1153         int hash, n, pos;
1154
1155         printf("%-8s %-10s %-5s %-2s %-6s %-*s %-*s",
1156             "USER", "COMMAND", "PID", "FD", "PROTO",
1157             opt_w ? 45 : 21, "LOCAL ADDRESS",
1158             opt_w ? 45 : 21, "FOREIGN ADDRESS");
1159         if (opt_U)
1160                 printf(" %-6s", "ENCAPS");
1161         if (opt_s) {
1162                 printf(" %-12s", "PATH STATE");
1163                 printf(" %-12s", "CONN STATE");
1164         }
1165         if (opt_S)
1166                 printf(" %.*s", TCP_FUNCTION_NAME_LEN_MAX, "STACK");
1167         printf("\n");
1168         setpassent(1);
1169         for (xf = xfiles, n = 0; n < nxfiles; ++n, ++xf) {
1170                 if (xf->xf_data == NULL)
1171                         continue;
1172                 if (opt_j >= 0 && opt_j != getprocjid(xf->xf_pid))
1173                         continue;
1174                 hash = (int)((uintptr_t)xf->xf_data % HASHSIZE);
1175                 for (s = sockhash[hash]; s != NULL; s = s->next) {
1176                         if ((void *)s->socket != xf->xf_data)
1177                                 continue;
1178                         if (!check_ports(s))
1179                                 continue;
1180                         s->shown = 1;
1181                         pos = 0;
1182                         if ((pwd = getpwuid(xf->xf_uid)) == NULL)
1183                                 pos += xprintf("%lu ", (u_long)xf->xf_uid);
1184                         else
1185                                 pos += xprintf("%s ", pwd->pw_name);
1186                         while (pos < 9)
1187                                 pos += xprintf(" ");
1188                         pos += xprintf("%.10s", getprocname(xf->xf_pid));
1189                         while (pos < 20)
1190                                 pos += xprintf(" ");
1191                         pos += xprintf("%lu ", (u_long)xf->xf_pid);
1192                         while (pos < 26)
1193                                 pos += xprintf(" ");
1194                         pos += xprintf("%d ", xf->xf_fd);
1195                         displaysock(s, pos);
1196                 }
1197         }
1198         if (opt_j >= 0)
1199                 return;
1200         for (hash = 0; hash < HASHSIZE; hash++) {
1201                 for (s = sockhash[hash]; s != NULL; s = s->next) {
1202                         if (s->shown)
1203                                 continue;
1204                         if (!check_ports(s))
1205                                 continue;
1206                         pos = 0;
1207                         pos += xprintf("%-8s %-10s %-5s %-2s ",
1208                             "?", "?", "?", "?");
1209                         displaysock(s, pos);
1210                 }
1211         }
1212 }
1213
1214 static int set_default_protos(void)
1215 {
1216         struct protoent *prot;
1217         const char *pname;
1218         size_t pindex;
1219
1220         init_protos(default_numprotos);
1221
1222         for (pindex = 0; pindex < default_numprotos; pindex++) {
1223                 pname = default_protos[pindex];
1224                 prot = getprotobyname(pname);
1225                 if (prot == NULL)
1226                         err(1, "getprotobyname: %s", pname);
1227                 protos[pindex] = prot->p_proto;
1228         }
1229         numprotos = pindex;
1230         return (pindex);
1231 }
1232
1233 static void
1234 usage(void)
1235 {
1236         fprintf(stderr,
1237             "usage: sockstat [-46cLlSsUuvw] [-j jid] [-p ports] [-P protocols]\n");
1238         exit(1);
1239 }
1240
1241 int
1242 main(int argc, char *argv[])
1243 {
1244         int protos_defined = -1;
1245         int o, i;
1246
1247         opt_j = -1;
1248         while ((o = getopt(argc, argv, "46cj:Llp:P:SsUuvw")) != -1)
1249                 switch (o) {
1250                 case '4':
1251                         opt_4 = 1;
1252                         break;
1253                 case '6':
1254                         opt_6 = 1;
1255                         break;
1256                 case 'c':
1257                         opt_c = 1;
1258                         break;
1259                 case 'j':
1260                         opt_j = atoi(optarg);
1261                         break;
1262                 case 'L':
1263                         opt_L = 1;
1264                         break;
1265                 case 'l':
1266                         opt_l = 1;
1267                         break;
1268                 case 'p':
1269                         parse_ports(optarg);
1270                         break;
1271                 case 'P':
1272                         protos_defined = parse_protos(optarg);
1273                         break;
1274                 case 'S':
1275                         opt_S = 1;
1276                         break;
1277                 case 's':
1278                         opt_s = 1;
1279                         break;
1280                 case 'U':
1281                         opt_U = 1;
1282                         break;
1283                 case 'u':
1284                         opt_u = 1;
1285                         break;
1286                 case 'v':
1287                         ++opt_v;
1288                         break;
1289                 case 'w':
1290                         opt_w = 1;
1291                         break;
1292                 default:
1293                         usage();
1294                 }
1295
1296         argc -= optind;
1297         argv += optind;
1298
1299         if (argc > 0)
1300                 usage();
1301
1302         if ((!opt_4 && !opt_6) && protos_defined != -1)
1303                 opt_4 = opt_6 = 1;
1304         if (!opt_4 && !opt_6 && !opt_u)
1305                 opt_4 = opt_6 = opt_u = 1;
1306         if ((opt_4 || opt_6) && protos_defined == -1)
1307                 protos_defined = set_default_protos();
1308         if (!opt_c && !opt_l)
1309                 opt_c = opt_l = 1;
1310
1311         if (opt_4 || opt_6) {
1312                 for (i = 0; i < protos_defined; i++)
1313                         if (protos[i] == IPPROTO_SCTP)
1314                                 gather_sctp();
1315                         else
1316                                 gather_inet(protos[i]);
1317         }
1318
1319         if (opt_u || (protos_defined == -1 && !opt_4 && !opt_6)) {
1320                 gather_unix(SOCK_STREAM);
1321                 gather_unix(SOCK_DGRAM);
1322                 gather_unix(SOCK_SEQPACKET);
1323         }
1324         getfiles();
1325         display();
1326         exit(0);
1327 }